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Digital Drive Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it. |
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Digital Drive Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it. |
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In Reply to: Digital Volume Control, More than you ever wanted to know... posted by DJS on February 9, 2007 at 01:16:17:
Too bad we can't sticky it. Whenever this topic comes up I start a post but bail out when it's apparent that it needs somethign as long as you've written to do it well.However, once you have the full picture, a couple rules of thumb can be used
a) if you only have a 16-bit capable DAC, forget it
b) if you have a 20-24bit capable DAC, you can get between 10 and 20dB of attenuation before any degradation sets in (depends on the low-level linearity of the DAC)
c) gain structure of your downstream system has to be set up properlyI think the idea of a hybrid system where you have an analog stepped attenuator with 10dB steps for coarse adjustment and a digital control for ~10dB of 'fine' adjustment is pretty attractive.
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Follow Ups
- Good post - dwk 06:16:01 02/09/07 (1)
- Re: Good post - DJS 20:02:30 02/09/07 (0)
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